Release 4.14 arch/sparc/include/asm/thread_info_32.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* thread_info.h: sparc low-level thread information
* adapted from the ppc version by Pete Zaitcev, which was
* adapted from the i386 version by Paul Mackerras
*
* Copyright (C) 2002 David Howells (dhowells@redhat.com)
* Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
* - Incorporating suggestions made by Linus Torvalds and Dave Miller
*/
#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/ptrace.h>
#include <asm/page.h>
/*
* Low level task data.
*
* If you change this, change the TI_* offsets below to match.
*/
#define NSWINS 8
struct thread_info {
unsigned long uwinmask;
struct task_struct *task; /* main task structure */
unsigned long flags; /* low level flags */
int cpu; /* cpu we're on */
int preempt_count; /* 0 => preemptable,
<0 => BUG */
int softirq_count;
int hardirq_count;
u32 __unused;
/* Context switch saved kernel state. */
unsigned long ksp; /* ... ksp __attribute__ ((aligned (8))); */
unsigned long kpc;
unsigned long kpsr;
unsigned long kwim;
/* A place to store user windows and stack pointers
* when the stack needs inspection.
*/
struct reg_window32 reg_window[NSWINS]; /* align for ldd! */
unsigned long rwbuf_stkptrs[NSWINS];
unsigned long w_saved;
};
/*
* macros/functions for gaining access to the thread information structure
*/
#define INIT_THREAD_INFO(tsk) \
{ \
.uwinmask = 0, \
.task = &tsk, \
.flags = 0, \
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
}
#define init_thread_info (init_thread_union.thread_info)
#define init_stack (init_thread_union.stack)
/* how to get the thread information struct from C */
register struct thread_info *current_thread_info_reg asm("g6");
#define current_thread_info() (current_thread_info_reg)
/*
* thread information allocation
*/
#define THREAD_SIZE_ORDER 1
#endif /* __ASSEMBLY__ */
/* Size of kernel stack for each process */
#define THREAD_SIZE (2 * PAGE_SIZE)
/*
* Offsets in thread_info structure, used in assembly code
* The "#define REGWIN_SZ 0x40" was abolished, so no multiplications.
*/
#define TI_UWINMASK 0x00
/* uwinmask */
#define TI_TASK 0x04
#define TI_FLAGS 0x08
#define TI_CPU 0x0c
#define TI_PREEMPT 0x10
/* preempt_count */
#define TI_SOFTIRQ 0x14
/* softirq_count */
#define TI_HARDIRQ 0x18
/* hardirq_count */
#define TI_KSP 0x20
/* ksp */
#define TI_KPC 0x24
/* kpc (ldd'ed with kpc) */
#define TI_KPSR 0x28
/* kpsr */
#define TI_KWIM 0x2c
/* kwim (ldd'ed with kpsr) */
#define TI_REG_WINDOW 0x30
#define TI_RWIN_SPTRS 0x230
#define TI_W_SAVED 0x250
/*
* thread information flag bit numbers
*/
#define TIF_SYSCALL_TRACE 0
/* syscall trace active */
#define TIF_NOTIFY_RESUME 1
/* callback before returning to user */
#define TIF_SIGPENDING 2
/* signal pending */
#define TIF_NEED_RESCHED 3
/* rescheduling necessary */
#define TIF_RESTORE_SIGMASK 4
/* restore signal mask in do_signal() */
#define TIF_USEDFPU 8
/* FPU was used by this task
* this quantum (SMP) */
#define TIF_POLLING_NRFLAG 9
/* true if poll_idle() is polling
* TIF_NEED_RESCHED */
#define TIF_MEMDIE 10
/* is terminating due to OOM killer */
/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | \
_TIF_SIGPENDING)
#define is_32bit_task() (1)
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sam Ravnborg | 255 | 87.33% | 4 | 33.33% |
| David S. Miller | 12 | 4.11% | 1 | 8.33% |
| Guenter Roeck | 10 | 3.42% | 1 | 8.33% |
| Richard Weinberger | 6 | 2.05% | 1 | 8.33% |
| Eric Paris | 5 | 1.71% | 1 | 8.33% |
| Peter Zijlstra | 1 | 0.34% | 1 | 8.33% |
| Greg Kroah-Hartman | 1 | 0.34% | 1 | 8.33% |
| Andreas Dilger | 1 | 0.34% | 1 | 8.33% |
| Al Viro | 1 | 0.34% | 1 | 8.33% |
| Total | 292 | 100.00% | 12 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.